I'm having a hard time finding anything about precious metals toxicity that would be used as a jewel (constant direct skin contact) and though your field expertise might help as I'm yielding nothing. Specifically I'm looking for the cheapest safe metal and the only safe metals I know are silver and titanium, which aren't cheap.

A toxicity level chart would be awesome but a molecular compendium with a guide on how to find their toxicity would be sufficient.

Thank you kindly

Edit 1:

The molecular compendium would have to be through skin absorption as it's probably quite different from ingestion and injection.

I have absolutely no technical knowledge of chemistry and much less biology, so if you're looking to make trouble, you're wasting your time as I already FAIL, so elegantly put as nerdy no lifers would qualify.

Edit 1:

Perhaps it was overreacted, not if it was flaming though ; I apologize otherwise, well no need in fact as you wouldn't be a nerdy no lifer.

I guess steel would be one of the cheapest "safe" metals. Tin can be used afaik, but it is soft and not lustrous, so it is generally not used. Nickel, on the other hand, is often used in jewelry and it is a notorious cause of hypersensitivity in some individuals. Alloys of safe metals can also be used.

But steel probably is something that can be used even in fine jewelry if combined with gemstones or such.